[求助] 怎么把u盘当内存啊？？
怎么把u盘当内存啊？？我在网上听说可以把u盘当内存用。谁能告诉我怎么做啊，本人内存才256，少的可怜啊。
（（或者给我点钱，我去买内存条，嘻嘻嘻））^_^ （（或者给我点钱，我去买内存条，嘻嘻嘻））^_^ 这个建议不错，我愿意吃这个亏！ 外部内存设备
增加系统内存 (RAM) 通常是提高 PC 性能最好的方法。内存越多，在不访问硬盘驱动器的情况下可以运行的应用程序就越多。但是，升级内存并非总是那么容易。此时必须了解所需的内存类型，购买内存，并打开计算机安装内存，有时，这样做可能会使您的支持协议失效。此外，有些计算机已限制内存扩展功能，即使您希望增加 RAM 也无法实现。
Windows Vista 在为系统增加内存方面引入了一个新概念。可以使用 USB 闪存驱动器作为外部内存设备 (EMD)，以在不打开机箱的情况下扩展系统内存并提高性能。计算机访问 EMD 设备中的内存的速度比访问硬盘驱动器上数据的速度要快得多，从而可以提高系统性能。该技术与“超级获取”技术结合使用，可以明显加快系统的响应速度。
EMD 技术既可靠又安全。您可以随时取下 EMD，不会丢失任何数据，也不会对系统造成负面影响；但是，如果取下 EMD，则性能将恢复到没有该设备时的水平。使用 USB 驱动器作为 EMD 时，USB 驱动器的磨损不是问题。独特的算法可以优化磨损方式，使 USB 设备即使重度使用，也可以作为 EMD 运行许多年。最后，为 EMD 上的数据加密，以帮助避免在取下该设备时，设备中的数据受到未经授权的访问。
Windows ReadyBoost
Adding system memory (RAM) is often the best way to improve your PC's performance. More memory means applications can run without needing to access the hard drive. However, upgrading memory is not always easy. You need to know what type of memory you need, purchase the memory, and open your computer to install the memory—which sometimes can invalidate your support agreement. Also, some machines have limited memory expansion capabilities, preventing you from adding RAM even if you are willing to do so.
Windows Vista introduces a new concept in adding memory to a system. Windows ReadyBoost lets users use a removable flash memory device, such as a USB thumb drive, to improve system performance without opening the box. Windows ReadyBoost can improve system performance because it can retrieve data kept on the flash memory more quickly than it can retrieve data kept on the hard disk, decreasing the time you need to wait for your PC to respond. Combined with SuperFetch technology, this can help drive impressive improvements in system responsiveness.
Windows ReadyBoost technology is reliable and provides protection of the data stored on your device. You can remove the memory device at any time without any loss of data or negative impact to the system; however, if you remove the device, your performance returns to the level you experienced without the device. Additionally, data on the removable memory device is encrypted to help prevent inappropriate access to data when the device is removed. 微软技术人员的一些解答：
Q: What perf do you need on your device?
A: 2.5MB/sec throughput for 4K random reads and 1.75MB/sec throughput for 512K random writes
Q: My device says 12MB/sec (or 133x or something else) on the package but windows says that it isn't fast enough to use as a ReadyBoost device... why?
A: Two possible reasons:
The numbers measure sequential performance and we measure random. We've seen devices that have great sequential perf, but horrible random
The performance isn't consistantly fast across the entire device. Some devices have 128M of lightning fast flash and the rest of the device is really slow. This is fine for some applications but not ReadyBoost.
Q: What's the largest amount of flash that I can use for ReadyBoost?
A: You can use up to 4GB of flash for ReadyBoost (which turns out to be 8GB of cache w/ the compression)
Q: Why can't I use more than 4GB of flash?
A: The FAT32 filesystem limits our ReadyBoost.sfcache file to 4GB
Q: What's the smallest ReadyBoost cache that I can use
A: The smallest cache is 256MB (well, 250 after formatting). Post beta2, we may drop it another 10 MB or so.
Q: Ok... 256M-4GB is a pretty big range... any recommendations?
A: Yes. We recommend a 1:1 ratio of flash to system memory at the low end and as high as 2.5:1 flash to system memory. Higher than that and you won't see much benefit.
Q: Isn't this just putting the paging file onto a flash disk?
A: Not really - the file is still backed on disk. This is a cache - if the data is not found in the ReadyBoost cache, we fall back to the HDD.
Q: Aren't Hard Disks faster than flash? My HDD has 80MB/sec throughput.
A: Hard drives are great for large sequential I/O. For those situations, ReadyBoost gets out of the way. We concentrate on improving the performance of small, random I/Os, like paging to and from disk.
Q: What happens when you remove the drive?
A: When a surprise remove event occurs and we can't find the drive, we fall back to disk. Again, all pages on the device are backed by a page on disk. No exceptions. This isn't a separate page file store, but rather a cache to speed up access to frequently used data.
Q: Isn't user data on a removable device a security risk?
A: This was one of our first concerns and to mitigate this risk, we use AES-128 to encrypt everything that we write to the device.
Q: Won't this wear out the drive?
A: Nope. We're aware of the lifecycle issues with flash drives and are smart about how and when we do our writes to the device. Our research shows that we will get at least 10+ years out of flash devices that we support.
Q: Can use use multiple devices for EMDs?
A: Nope. We've limited Vista to one ReadyBoost per machine
Q: Why just one device?
A: Time and quality. Since this is the first revision of the feature, we decided to focus on making the single device exceptional, without the difficulties of managing multiple caches. We like the idea, though, and it's under consideration for future versions.
Q: Do you support SD/CF/memory stick/MMC/etc.?
A: Mostly. In beta2, we added support for a small number of SD/CF cards on internal USB2 & PCIe busses. RC1 has a much broader support range.
Q: Why don't you support SD on my USB2.0 external card reader?
A: We unfortunately don't support external card readers - there were some technical hurdles that we didn't have time to address. In general, if a card reader shows a drive without media in it (like a floppy drive or CD ROM does), we can't use it for ReadyBoost.
Q: Will it support all USB drives, regardless of how they are ID'd to the OS ("hard disk drive" or "Device with Removable Storage")?
A: We have no way to tell what is on the other end of a USB cable so we do some basic size checks (since no one has a 200GB flash device ;-) ) and then perform our speed tests. HDD will not, however, pass our speed tests, and there is no benefit to using a USB HDD for ReadyBoost.
Q: Can you use an mp3 player to speed up your system?
A: Not currently. MP3 players use the 'plays for sure' interfaces to expose themselves to Windows. We require that the device appear as a disk volume. These aren't currently compatible.
Q: How much of a speed increase are we talking about?
A: Well, that depends. On average, a RANDOM 4K read from flash is about 10x faster than from HDD. Now, how does that translate to end-user perf? Under memory pressure and heavy disk activity, the system is much more responsive; on a 4GB machine with few applications running, the ReadyBoost effect is much less noticable.
Q: I can't get my device to work with ReadyBoost... can I lower the perf requirements?
A: Unfortunately, no. We've set the perf requirements to the lowest possible throughput that still makes your system faster. If we lowered the perf requirements, then there wouldn't be a noticeable benefit to using ReadyBoost. Remember, we're not adding memory, we're improving disk access.
Q: Which manufacturers support ReadyBoost?
A: Well, I hope that all of them do, eventually. Right now, we're working with manufacturers to create a program that will allow them to identify ReadyBoost capable devices on their packaging. 闪存读取速度完全没硬盘快
楼主这样说真是搞笑了 原帖由 第九艺术 于 2006-7-21 16:17 发表
闪存读取速度完全没硬盘快
楼主这样说真是搞笑了 你完全错了，在随机读取小文件时，flash效率是硬盘的10倍。 嘿，大家好像跑题了，我问的是怎么操作，难道就把u盘插上就行了？ 原帖由 zhoukb 于 2006-7-21 16:19 发表
你完全错了，在随机读取小文件时，flash效率是硬盘的10倍。 这个年代那里还有小文件？
蓝光几次跳票，为什么呢？
未来１５年内的硬盘都不会淘汰吧？
至于ＬＺ所说。。。。。。。
这有意思吗？虽然１Ｇ的Ｕ盘不到２００，一分钱一分货，别想替代内存了！ 可以,
但并不实用,况且现在vista还不是正式发行版,楼主再等下吧
最好还是加多内存 原帖由 wangchunboss 于 2006-7-21 16:35 发表
这个年代那里还有小文件？
蓝光几次跳票，为什么呢？
未来１５年内的硬盘都不会淘汰吧？
至于ＬＺ所说。。。。。。。
这有意思吗？虽然１Ｇ的Ｕ盘不到２００，一分钱一分货，别想替代内存了！ 这里的小文件跟你说得根本不是一回事，看看技术人员的解答再说话。